Finds that dishonest construction contractors sometimes hire persons without proper licensing and certification to do electrical, plumbing, and conveyance work. This practice gives honest contractors an unfair competitive disadvantage and leaves workers and customers vulnerable. Requiring persons with proper licensing and certification to visibly display their licenses and certificates while doing such work will help address the problems of the underground economy in the construction industry, level the playing field for honest contractors, and protect workers and consumers.

Requires certificate holders to wear and visibly display their certificates while engaging in the electrical construction trade. A certificate holder need not wear and visibly display his or her certificate if doing so would create a danger or unsafe condition for the certificate holder or for the public, as long as the certificate holder can demonstrate proof of his or her certificate to electrical inspectors appointed by the director of labor and industries and by the officials of incorporated cities and towns where electrical inspections are required by local ordinances.

Requires licensees to wear and visibly display their licenses while performing conveyance work. A licensee need not wear and visibly display his or her license if doing so would create a danger or unsafe condition for the licensee or for the public, as long as the licensee can demonstrate proof of his or her license to an elevator inspector of the department or an elevator inspector of a municipality having in effect an elevator ordinance under RCW 70.87.200.